Furnace arch construction



May 22,1923. 1,456,023

L.. H. HosBElN FURNACE ARCHKCONSTRUQTION Original Filed March 26, 1918 1m uumlv iPatented May 22, 1923.l

STATES erica.

LOUIs H. HOsBEIN, OF CHICAGO, ILLINOIS, AssIGNOn. TOM. H. DETBICK'CO., or

CHICAGO, ILLINOIS, A conronArIoNoF ILLINOIS.v

-I FUnNACE' ARCH CONSTRUCTION.

Implication medmarcn 2s, 191s, serial No. 224,749. Renewed my 9, 1921. serial no. 4es,o47. j

furnace arch constructions wherein aseriesv of lire bricks are supported by archbarS; having reference more especially to such constructions wherein an outer protective brick or bricks for the extremityy of the arch bar. is or are detachably supported 'adjacent the end brick of the series.

The object of the present invention is to provide a simple and efficient construction' and organization of elementsr whereby the.-

` end brick of the seriesI of bricks on the bar, is securely butldetachably locked in place preparatory to the application of the outer protective' brick or bricks to the-structure.

To this end, my invention, generally stated, consists in thecolnbinationwith an arch bar, y,of a detachable end bracket therefor constituting, in eiect, a continuation of 'the bar, said bracket being constructed toreceive and-support the end brick of the assembled series and'having a member which interlocks with the said brick in `such a manner as to maintain the latter xedly in position.

The invention also comprises such a con-Yl structlon whereln the said ,end brlck 1s adapted to receive and support a protective brick in close relation to the interlocking member and the adjacent end ofthe bracket. The invention also comprises features of construction which will be hereinafter` described and claimed. l

In the drawings- Figure 1 is a perspective view of a portion of a furnace arch construction embodying my invention, the vprotect-ive end bricks being` omitted.

ig. 2 is an elevation of the detachable bracket and the adjacent end of the arch bar, showing the suspended bricks partly in section. v

`Fig. 3 is a verticalsection, as on .the line 3--3 of-Fig. 2.

Figs. 4, 5 and 6 are perspective views, on

a smaller scale, of different forms of bricks employed in the structure.

Referring to the drawings, 10 designates an arch bar comprising a web having basal flanges 11 extending longitudinally thereof,

'which bar is carried by a suitable supporting structure of* any usual or approved character. v

The bar supports a series of counterpart fire bricks 12, each of which hlas formed i sively to the end 'of the bar and slid thereclose contact' a 1 7o along so as to be supported in with each other.

14 designates a brick which issupported at the' rear of the series and constitutes, in ,l effect, a part of the same. This brick isl pro' vided in a part of its upper portion withan undercut slot 15, which, instead of being applied directly to the basal -flanges of the arch bar, is supported upon la flanged bracket extension 16 of special construction whichis detachably secured to the end of the bar, as will presently appear. The brick 14 -vis* constructed and arranged to, project partly beyond the bracket extension, the upper part of f the outer projecting portion being cut away to form a depressed or hook-like seat 17 adjacent the undercut floor of the slot 15. i

18 designates end` protective bricks, each having an upper overhanging portion 19 provided with a depending nose 20 ada ted for registry with the depressedseat 1 of the brick 14. Thus the bricks 18 or any of them, can be readily applied to or removed from the end brick 14. When the former bricks are so applied they are eiiectually supported and their upper portions protect thesupporting bracket structure from the destructive action of the furnace heat.

The bracket structure, inits preferred form, comprises a casting including a vertical web having an upper forward extension constituting a tongue 21 Awhich is adapted to ybe tted betweena pair 'of spaced lugs 22 .ture to the end of the arch bar as just mentioned, the brick 14 can be slid upon the free ends of the flanges 25 in'such a manner that the lug will enter the depressed seat portion of the brick 14 and thus span the adjacent end of the undercut portion of the slot 15 and serve as an effective end stop for the brick. The bracket with the brick 14 thus applied thereto being supported on the bar as stated, the brick thus has bearing against the adjacent brick 12 on the arch bar, and is embraced by and effectually locked between the latter brick Aand the lu'g 26.

By removing the key 23the bracket to` gether with the brick 14 can be readily detached in order to replace such brick with a new one, or to remove any or all of the series of bricks 12 from the arch bar, as need may require.

When the protective bricks 18 are applied to the end brick 14, the overhanging interlocking portions of the former cover the end lug 26 of the bracket structure and thus protect such lug as well as the adjacent parts of the structure from the destructive action of the furnace heat. The arrangement is effect-ive to prevent longitudinal displacement or creeping of the end brick 14 and the cover brick 18 4in either direction. ln the event the bar 11 is arranged at an inclination downwardly from the end carrying` the bracket, the creeping of the end brick 14 is prevented by the abutment of the cover brick 18 against the end of the lug 26. Likewise, if the bar 1]. is inclined downwardly toward the bracket 24, the creeping of the end block 14 ofl of the bracket is prevented by the abutment afforded by the lug 26. While the terminal bricks are thus positively prevented from displacement, they do not prevent the desirable freedom of relative movement of the several associated bricks induced by the changes in temperature.

I preferably provide the rear of the bracket web with an upstanding portion bearing a horizontal shelf 27 adapted to sustain the bricks which constitute the Aapronl wall of' the furnace; the latter bricks thus being supportedl independently of the arch bricks.

lt is to be understood that my invention is not limited to the exact details of construction herein described as the same may be modified within the principle of the invention as defined in the appended claims.

li claim- 1. rThe combination with an arch bar and aseries of fire bricks thereon, of means` for locking an vend brickat one end of the bar including an outwardly rojecting portion terminating `in an angu arly-disposed lug constituting a locking member, said end brick having a slot therein which receives said. projecting portion and having outwardly beyond the slot a reduced portion into which said member extends, and a protective .brick having a portion which overhangs the reduced portion of the said end bric 2. rl`he combination of a supporting'bar,4

a series of fire bricks thereon, an end bracket detachably mounted on said bar and having a brick-supporting portion extending longitudinally beyond the outer end of the body of the bracket and terminating in an angularly-disposed lug constituting a locking Voit' the bracket and terminating in an angularly-disposed lug constituting a locking member, a brick having a slot therein constructed to receive the body of the bracket and its supporting portion and having outwardly beyond the slot a reduced portion, into which said lug extends, and an end protective brick having a portion interlocked with said reduced portion and confining the said lu e 4.7Te combination of a supporting bar, a series of fire bricks thereon, an end bracket detachably mounted on said bar having lateral brick-supporting flanges extending end- Wise beyond the body of the bracket and terminating in an angularly-dis'posed locking lug, a brick having a slotted portion engaged by said flanges and lug and having a portion extending beyond said lug, and an end protective brick having an interlocking connection with the extended portion of the said slotted brick and confining the said lug. 5. The combination of' a flan ed supporting bar, a series of slottedy lire brlcks assembled. thereon, an end.bracket detachably mounted on said bar having a flange extending 1on-` gitudinally beyond the outer endof the body of the bracket, said flange having an angularly-disposed lug constituting a locklng member at its outer end, a slotted brick mounted 'on said bracket having an outwardly extending portion shaped to form a seat which receives the said retaining me1niso ber, and an end protective brick having an overhanging portion imposed on said seatin close relation to said member.

6. In an end bracket for arch bars, a body having a basal brick-supporting flange extending longitudinally of and beyond one end of the body, the extensionof said flange having at its outer end` an up-standing brick-locking projection, and said body having means whereby the bracket may be affixed to an arch bar.

7. In an end bracket for arch bars, a body having a basal brick-supporting flange eX- tending longitudinally of and beyond one end of the body, the extension of the flange having at its outer end an up-standing brick-locking projection, said body having an upper horizontal brick-supporting shelf and also means whereby the bracket ,may be aiiixed to an arch bar. l

S. In a furnace arch construction the cornbination of an arch bar, a plurality of bricks, movably suspended upon the bar in a series, the endof the bar being provided with a stop effective upon the terminal brick to prevent its creeping in one direction, and one or more cover bricks supported on said terminal brick in position to cover the end portion of the bar and said stop and cooperating with the latter to prevent creeping of the terminal brick in the other direction.

9. In a furnace arch 'construction the combination with a brick supporting arch bar, of a terminal brick suspended thereon, a

cover brick suspended on the terminal brick in position to protect the end of the bar, and

'a lug supported on the bar between said bricks in position to prevent their creeping vin either direction on the bar, said lug being of less width than said terminal brick.

10. In a furnace arch construction the combination with an arch bar of a plurality of bricks suspended thereon in a series, said bar including a stop member cooperating v with the terminal brick of the series to retain the same against displacement off the `protect said stop.

11. In a furnace arch construction the combination of an arch bar, a` lplurality 'of bricks suspended thereon, 'a bracket member detachably connectedto the arch bar at one end thereof, and a terminal brick retained by said bracket in cooperation with the bricks on the bar. i

l2. In a furnace arch construction the combination of an arch bar, a plurality of bricks suspended thereon in a series, a bracket having demountable connection with the arch' bar at one end thereof, a plurality of bricks supported on said bracket, said bracket having a portion disposed for cooperation with the bricks supported thereon to prevent their displacement longitudinally of the bracket. l

Si ned at Chicago, in the county and tate of Illinois, this 19th day of March LOUIS H. HOSBEIN.

of.l Cook l 

